Double filter.



No. 529,942. l Patented Aug. 1, |899.

L. wAnNEn,1n. l

nouaLE FILTER. (Application illd Sept; 30, 1898.)

(no u hdel.) 7 sheen-sheet l.

1%... //MW I 5.5

No. 629,942. Patented Aug. l, |899.

L. WANNER 1n.

DOUBLE FILTER. (Application filed Sept, 80. 189B.)

76' Y im".

Patented Aug. i, lass.

, L, wANNgR, xn. DOUBLE FILTER.

(Appuomon mea sepe,ao.1ass.;

7 Sheets-Sheet 4.

`(Nn Modei.)

No. 629,942. Patented Aug. I, i899.

L. WANNER, In. DOUBLE FILTER.

4 (Application med Sepe. so, 139s.) (llo Model.) 7 Shaets.-Sheet 5.

gy, f5.

nu. 629,942. Y Patented Aug. l, |899.

L. wANuER, 1n. DOUBLE HLTER.

(Application tiled Sept. 30, 189B.) `(No Model.) 7 Shasta-Shut 6.

9 N0. 629,942. Ptented Aug. l, |899.

L. wANN'ER, Jn.

. DUUBLE FILTER.

' (Application led Sept. 80, 1898.) (No Model.) 7 Sheets-Sheet 7.

25 22 i522 Zl/ Eea 22. al? 3 UNITED VSTATES PATENT OFFICE.

DOUBLE FlLTER.

io" The objeotof my invention'is to eonstrnot a. double iilter by coupling two single filters 4With thepeeessary pipes and valves for the purpose of liltering the wat-er twice and to 'wash out eaehlilter 'separately with filtered 'x5 water from the .other filter. "l further oom- Alggino my double iilter with one or two mndn 4catchers,'es specified amldeserihed in my application for Letters Patent Ifiled September 6,1898, under Serial No. (390,333, for the 2o purpose of' separatiimr the nnilan lother 'heavy matter from the wet-er before allowing it to enter .the filter.' v

A further object of my inventionrelntes to the peculiar construction by which one ofthe ,"25 lltersean be thoroughly out off from the other eind the mud-catcher: forthe purpose of repeirsfat the saine-lime' allowing the supplyof'lteied water through the other lilter.

I -attairrthese objects by the construction'- 3o illustrated in the accompanying drawings, in

' Figurel, Sheetl, is :iverlical 'section show ing the general arrangement of the ldouble filter anditscombinationwithamud-oateher.l `3,5 'l`his.Fig. l being.. merely a diagram of the 'total arrztngemenmdoe's not show any details .of the construction, hut simply indicates the yarioueparts, as seetions of theiilters, per; foratedplateslin the filters and mnd-catcher7 4o, thebodyof the lattorghe pipes, anti valves.

' Theiilling material ol. .the filter is oniittellln thisliig. land only the top lines of the single layers slightl y indicated. a vertiealneetion through one of the coupled v45 filtere, showingall the details of e'onstrnof tion, part. ofwhich are omitted i-n Fig. l..

Fig. 5, heet. 3, is ahorizontal section-on line X X,'Shee'fsl mid-2, *showing the rinUf-ehapedV dstrihuling-strainer .in the upper compart- 56 ments of the filters. Fig. (i, Sheet 3, is a perspeeti re' view of one of these strainers ef; and Fig. .7, Sheet 3, is a partial side elevation and Fig. 4 .Sheet 2, is v l parl-iai section of one of these strniners of",

both views heini.,r drawn to a larger seele: Fig. El, Sheet l, n top-view; Fig. I3, Sheet l, a front View or" the stra-inem` diselin-rging the water into or drawing the saine from the two lower compartn'ients of the lili-ere, `:lrawn to the eainesealezi-s Figs. fiand', einem 2. Figs. S to 23 on Sheets l, 5, (1,'iintl 7 are diagrams Showing,r the various waysv in which and the various purposes for which the double filter can be nsed,ns `.vill he explained farther on.

Similar letters and figures refer to similar parte throughout the severalfviewsi.

The double .filter consist-s of two Single seetional lilters A andl li, Coupled together byv means of pipes and valves and connected with one or tiroA initd-catchers, only one of which is shown at one e'nfd in Fig. l, while the other can he conneetedto thepipe P5.

The iiiiitl.-catelier being thoroughly deseribed in my application for Letters Patent for the saine llecl September (i, 1898, under Serial No. 690,333-, l desist from explaining its working!l here for the' purpose of showing the work'ingof the Adouble iilter and willonly allude to the1nudeateher. l 'thereforeassume in the' following,T leei'iption that all water enteriinqr through the pipe D has passed through the 1nud-eatoliexu D' is the supply-.pipe to the filters.

nl' Gr2 G is the main the valve l.

D6 l)s Dm D D? D are the branch connection, with the ijalves (5 10 'il ll.

D4 and D" are the luy-pass pipes, with bypass valves l and 5.

F6 1"-`2 and FT F23 pipes, 'with the clean-out valves 2. and

-the clean-ont'eonneetions, .with the union 2l.

connection-pipe, with nre the main eleamout IOO ters for- .Lig the double filter diler from this der, and bolt. are omitted ers take the place of the T-head in the lupper stead of two.

. contained in the water byinserting a mudthe wire-gauze,

lpanying drawings and not marked with let- 'tionof the current of water is reversed for the purpose of washing ,clog up theholes in the perforated plate and 'wire-,gauze at th'e top ofthe uppersection voi" the-filter inssuch'a with the. cleansing of quire'the filter to beopened at comparatively short` intervals for the purpose of cleaning eand ci are the ring-shaped distributingstrainers.

e8 ew e9 e1l are the supply-strainers.

e e e15 e are the clean-out strainers.

F10 and Fn are plugs.

As the double filter can only be used when the water enters the same under pressure', be it from the city-supply, elevated tanks, or through other lrneans,'it is once for all assumed that this pressure, being essential for the working ofK the filtering apparatus, exists, and this pressure is alluded to in the following part of. the specification wherever it is mentioned.

The single filters being essentially the same as patented September 28,' 1897, under No. 590,868, those details which have been specified and explained there and which, are not essen tial to the construction of the double fil'- ters and which comprise theperforated plates, the spiders, the bolts, and the gaskets arev merely shown in the accomters, and as these parts essentially belong to.- the compartments of the filters' they will not be separately mentioned when the action of the double filter is explained. The two lsingle filter only ina few point-s, viz: First, the perforated plate, lche wire-gauze, the spiat the top of the uppersections; second,the ring-shaped strainsection; third', theT-heads in the two other sections arepreplaced bystrainers of a different shape, as shown in Figs. 2 and 3, Sheet 1; fourth, the upper sections ofthe doubleiilter have three layers of filtering material in- Experience having shown that in-the single filter patented September 28, 1897, No.590,'86,8, the mud 'and other heavy matter deposited in the filtering matter of the upper-section through the act of filtration when the direc-l ont the filter will manner as to interfere the iilter, and thus torethis perforated plate and the wire-gauze', I havefonndjit advisable toomit these and to 'separate the mud and other heavy matter catcher between the supply-pipe and the .filteri'; This mud-catcher forms'- an essential part of the double filter, as an accessory to the same, `for the purpose stated above.

The ring-shaped straine-rs e6 and e7 consist of tubular rings connected at one end to Ts, into which the connect-ion branch pipes Dr" anidfDT'are screwed. On the inner and outer eirc'dmferences these tubular ringshave one vor more rows of perforations. In the present- The filter-ing material is vinstance two rows are 'shown both on the ini ner aud outer circumferenccsf thc rings. These ring-shaped strainers have .the purpose of distributing the water which enters from D5 and D7 under pressure `approximately evenly over the surfaces of the upper layers ofthe fillings of the upper compartments ot'A and the escape of these particles with the clean-out water,the perforated plate and wiregauze being omitted, which in the single Iil- 'ter referred to above formed an obstruction to the proper escape ofthe same. 1

The strainers es e? 721 e11 and e 61.5 616 e are constructed as shown in Figs. 2 and 3. They are funnel-shaped,wider at the mouth in horizontalthan in vertical direction, contracted to a circular section at the other end, and puovided with a thread fr receiving the threaded end of the pipes. The-mouth of these strainers is provided with fine wire netting or gauze. The pu rpose of these strainers e13 egel@ e is to spread the water entering through these over the surface of the ltering material in the two lower compartments of the iilters A and B, while the strainers e14 e15 e16 e17 offer a-'widcr shrt'ace to the vwater entering the same during the action of cleansing the sections. In

the strainers e8 e9 e10 e the fine wire netting yor gauzewill foroe'the Water to escape .in

fine threads, thus preventing the same of moving the particles in the. upper layers of the filtering materiali In the strainers 814915 el e" this wire netting or poseto preventany of the filtering material to escape when the sections are-being cleansed.

The filteringv material in the upper sections A and B' is composed: of three layers in the present instance, experience having-.shown that the two layers used heretofore were insuiicient. f

lows: In sections Afand Bf the upper layer oonsistsof sharp quartz sand, the second layer of ground marble, and the bottom layer ot Turkish emery. per layer consists ofv very fine bone-black and the bottom layer 'of medium bene-black. In section A3 and B3 the filtering material consists of coarse bone-black. It is understood, howe ver,that the filtering material may be varos.4

composed as fol- In sections Aaud B? the npvried according to the conditions and chemical analysis of the water to be filtered. It is furlnodify the distribution and various'valves and that in consequenceT/helr number may be increased or decreased with- 13o ther understood that local conditions-may' 1 location of the' out affecting the general principle of the double filtering apparatus.

To explain the action of the filter for the various purposes it is intended for, the diagrams Figs. 8 to 23 on Sheets 4 to 7 show the direction of the current of water through thel pipes and filters by the means of arrows. The open valves are indicated by their respective numbers and the closed valves by a heavy T across the pipes;

The operation of the filter for the various purposes is as follows:

A, Fig. 8, Sheet 4: The valves 4 18 12 7 19 21 are open; the others closed. The water entering by the supply-pipe D will pass through the left-hand by-pass D4 into the left-hand filter A, will pass downward through the three compartments of filter A through the lefthand supply connection D12, the main connection G3 G2 G, the upper righthand branch connection-D7 into the right-hand filter B, downward through the same, and the supplypipe D19 D2O to the house connection. For the reverse of this action open valves 5 19 13 6 1S 20 and close the others. In both these cases the water will pass through both filters, and thus be thoroughly filtered twice before entering the house connections.

B, Fig. 9, Sheet 4: The valves 4 (or 1 and 6) 1S 12 13 19 3 23 are open; the others closed.

' The water entering by the supply-pipe D will pass through the by-pass pipe D1 (or through the valves 1 and 6) and the branch D6 into the left-hand filter A and downward throughA the three compartments of the same, through the supply connection pipes D12 D12 and the bottom outlet-pipe D2 into the right-hand lter B, upward through the three compartments of the same, the clean-out pipes F5 and F23, and out into the sewer connection. For

the revers/e of' this action open the valves 5A (or 1 and 7) 19 13 12 18 2 22 and close the 0thers. In both these cases the water will be filtered in one filter and wash out the other one with thoroughlyfiltered water.

C, Fig. 10, Sheet 4: The valves 4 (or 1, 6, and 7) 5 1S 2O 19 21 are open; the others closed. The water entering by the supply-pipe D will pass through the by-pass pipes D4 and D"i (or through the valves 1,6,and 7) and the branches DB and D7 into the filters A and B, downward through the three compartments ofthe same and one half out through the outlet D2 and supply D18 D20, the other half out through the outlet D3 and the supply D1 D21. In this case the water will undergo single filtration in each filter, and one part, passing filter B, may be used for cleaning out the mud-catcher with filtered Water, while the part passing filter' A may supply the house with filtered water, or vice versa.

D, Fig. 1l, Sheet 4: The valves 4 1312 7 3 23 are open; the others closed. The water entering by the supply D' will pass through the by-pass D4, the branch supply D into the filter A, downward through the three compartments of the same, through the outlet D2, the

supply connection D12, the main connection G2 G2 G', the supply branch D2, into the top of filter B and out through the top clean-out branch F5 and the clean-out pipe D22. For the reversed action open valves 5 19 13 6 2 22 and close the others. In both these cases the water will undergo single filtration in one lter and will pass out unused to the sewer connection.

E, Fig. 12, Sheet 5: The valves 4 (or 1 and 6) 18 12 9 15 23 are open; the others closed. The water entering and passing through the filter A D2 D12, as before, will pass up the main connection G3 G2, throughV the branch connection D2, into and across the middle compartment B2 of the filter B, through the branch F15, up the pipe F7, and out to the sewer connection. For the reverse action open the valves 5 (or 1 and 7) 19 13 8 14 22 and close the others. In both cases the water will undergo single filtration in one filter and will wash off the surface of the filling in the middle compartment of the other filter with filtered water.

F, Fig. 13, Sheet 5: The valves 4 (or 1 and 6) 18 12 9 3 23 are open; the others closed. The water entering and passing through the filter A D2 D12, as before, will pass up the main connection G2 G2,'through the branch connection D2, into the compartment B2 of the filter B, up through the compartment B' of the same,the top clean-out branch,0ut through F22 to the sewer connection. In both cases the water will undergo single filtration in one filter, will wash off the surface of the filling in the middle compartment, and the whole upper compartment of the other filter with filtered water.

G, Fig. 14, Sheet 5: The valves 4 18 12 7 15 23 are open, the others closed. The Water entering and passing through the filter A and pipes D2 and D12, as before, will pass up through G3 G2 G D7 into the filter B, down through the upper compartment B' of the same into the compartment B2, through-F15 F2, and out to the sewer connection. For the reversed action open valves 5 (or 1 and 7) 19 13 6 14 22 and close the others. In both cases the water will undergo single filtration in one filter, wash out the Whole upper compartment, and `wash off the surface of the filling of the middle compartment of the other filter with filtered water.

H, Fig. 15, Sheet 5: The valves 4 (or l andA 6) 18 12 11 17 23 are open, the others closed. The water entering and passing filter A D2 D12, as before, will pass up g3, through D11, into and across the compartment B3 of the filter B, through F1T F1, and out to the sewer connection. For the reversed action open the valves 5 (or 1 and 7) 19 13 10 16 22 and close the others. In bothcases the water will undergo single filtration in one filter and will wash oft the surface of the filling ofv the bottom compartment of the other with filtered Water. i A

I, Fig. 1G, Sheet 6: The valves (or 1 and IOO 6) 18 12 11 15 23 are open, the others closed. The water entering and passing through the filter A, D2, and D12, as before, will pass up G2, through D11, into the lower compartment B8 and through the middle compartment B2 of the filter B, through F15, up F7, and out to the sewer connection. For the reversed action open the valves 5 (or 1 and 7) 19 13 10 14 22 and close the others. In both cases the water will undergo single filtration in one fil ter, will wash off the surface of the filling of the lower compartment, and wash out the whole middle compartment of the other filter with filtered water.

K, Fig. 17, Sheet 6: The valves 4 1S 12 7 17 23 are open, the others closed. The water entering and passing through the filter A, pipes D2 and D12, as before, will pass up G3 G2 G', through D7, into filter B, through the compartments B and B2, across B2, through F17, up F7, and out to the sewer connection. For the reversed action open the valves 5 19 13 6 16 22 and close the others. In both cases the water will undergo single filtration in one filter, partial filtration in the other, and will wash o the surface of the filling of the lower compartment with water filtered through five compartments.

L, Fig. 18, Sheet 6: The valves`4 (er1 and 6) 18 12 9 17 23 are open, the others closed. The water entering and passing through filter A D2 D12, as before, will pass up G2 G2 D9, into and downward through compartment B2, across compartment B2 of filter B, through F17, up F7, and out to the sewer connection.

- For the reversed action open the valves 5 (or 1 and 7) 19 13 8 16 22. In both cases the Water will undergo single filtration in one filter, partial filtration in the other, and will wash off the surface of the filling of the lower compartment with Water filtered through four I compartments. Y

M, Fig. 19, Sheet 6: The valves 4 (or 1 and 6) 18 12 1l 3 23 are open, the others closed. The water entering and passing the filter A D2 D12, as before, will pass up G2, through D11, into the compartment B2, up through the compartments B2 and B' of' the filter B, out through F5 and F22, into the sewer connection. For the reversed action open the valves 5 (or 1 and 7) 19 13.10 2 22 and close the others. In both cases the water will undergo single tiltration in one filter, Will wash off the surface of the filling of the lower compartment, and wash through the two upper compartments of the other filter with filtered water.

N, Fig. 20, Sheet 7: The valves 4 (or 1 and 6) 18 12 13 19 17 23 are open, the others closed. The water entering and passing through the filter A D2 D12, as before, will pass through D12, up D2, up through compartment B2 of filter B, through F17, up F7, out to the sewer connection. For the reversed action open the valves 5 (or 1 and 7) 19 13 12 18 16 22 and close the others. In both cases the Water will undergo single filtration in one lter and will wash out the lower compartment of the other filter with filtered water.

O, Fig. 21, Sheet 7: The valves 1 12 13 18 19 2 3 22 23 are open, the others closed. The water entering by the supply D' will pass down through G G2 G2, will branch o through the two supply connections D12 and D12, up through D2 and D2, upward through both lters, up through F4 and F5, and out through F22 and F23 into the sewer connection. In this case both filters will be washed out from the bottom to the top through all three com= partments with water that has only undergone the preliminary filtration through the mud-catcher.

P, Fig. 22, Sheet 7 The valves 4 (or 1 and 6) 18 20 12 13 21 are open, the others closed. The water entering and passing through the filter A, as described heretofore, will pass down through the outletD2and partly through D12 and D22 to one branch of the house-suppl y and partly through D12D12 D2 D21 to the other branch. For the reversed action open the Valves 5 (or 1 and 7) 19 21 13 12 20. In both cases the water will undergo single filtration. One part can be used for supplying the house, while another part may wash out the mud catcher with filtered water.

Q, Fig. 23, Sheet 7: The Valves 1 12 13 14 22 19 15 23 are open, the others closed. The water entering by the supply D' will pass down through G' G2 G2, one part through D12 D2, upward through the compartments A2 A2 of the filter A, through F11 F6, out to the sewer connection, and the other part through D12D2, upward through the compartments B2 B2 of the filter B, through F15 F7, out to the sewer connection. In this case the water preliminarily 'filtered in the mud-catcher will wash out the two lower compartments of both filters.

It is obvious that a number of other combinations of the open and closed valves will cause other conditions for the fiow of the water through the pipes and filters, but those shown on the diagrams will sufficiently explain the action of the double filter.

The various combinations explained hereinabove show as follows:

First. The water can undergo complete double filtration by passing through both filters, as explained in case A.

Second. The water can undergo single filtration in one filter and the other whole filter can be washed out with filtered water, as shown in case B.

Third. The water can undergo single ltration separately in each filter, as shown in case C.

Fourth. The water can undergo single filtration in one filter and can partially wash out the other filter with filtered water, as shown in the cases D E F G I-I I K L M N.

Fifth. Both filters can be thoroughly washed out with Water that has only undergone the preliminary filtration in the mud-catcher, as shown in the case 0.

Sixth. Both filters can be partially washed out with water that has only undergone the preliminary filtration in the mud-catcher, as

shown in the case Q.

Seventh. The water can undergo single filtration in one filter, while the other filter is thoroughly cut olf from all connections, as shown in the case P.

The mud-catcher I'I, with the necessary pipes and valves, as specified in my application filed September 6, 1898, is an important and indispensable accessory to the double lilter. There should preferably be two of themone at each end-connected by the pipes P10 and P20. The coupling 25 is illustrated as an ordinary L-coupling; but obviously if two mud-catchers are used this coupling must be a T to connect the two pipes leading therefrom to the main pipe G. One of the mudcatchers would furnish the water for the filter in all cases shown on Sheets 4 to 7, while the other could be cleaned by arranging the valves as shown in Figs. 8, l0, and 22 or by opening suitable valves during any of the other operations.

What I claim as my invention, and desire to have secured by Letters Patent of the United States, is-

1. The herein-described double filter, consisting of two single sectional lters, an inletpipe, a valved main connection-pipe, a Valved by-pass,and a valved bran ch connection-pipe, connecting each section, valved main and branch clean-out pipes, clean-out connectionpipes, valved outlets, valved supply-pipes leading therefrom and valved supply connection-pipes, all substantially as described and setforth.

2. The herein-described double filter consisting of two single sectional lters, and inlet-pipes, each of which is connected to a main valved pipe, valved by-pass pipes connected to the main pipe, and Valved branch pipes extending from the main pipe into the upper part of each section, a ring-shaped tubular strainer secured to each branch in the upper section of the filter, `strainers secured to the branches leading into the other sections, valved outlet-pipes leading from the lower section of each filter, a valved supply-pipe connected to each outlet, mud-catchers, connections between them and the su pply-pipes, valved clean-out pipes, a connection between said pipes, a Valved pipe connecting the top of each filter with the clean-out pipes, valved branch pipes leading from the upper portions of each section of the filters except the top one and strainers secured to these branches, substantially as and for the purpose set forth.

3. The herein-described double filter, consisting of two sectional single filters,with an inlet for each,a valved main connection-pipe and valved branches leading therefrom into the upper portions of each filter, a tubular ringshaped strainer secured to each branch in the upper section and provided with perforations on its inner and outer circumference, the under side of said 'strainer being on a line with the filtering material, Valved branches also extending from the main pipe into the upper portions of the remaining sections, fiattened bell-shaped strainers secured thereto, branch clean-out pipes extending from the upper portions of all sections except the top, to the main clean-out pipe and at a point opposite the branch inlet-pipes, strainers secured to said pipes, valved pipes extending from the upper section rof the filters to the main cleanout pipes, and a pipe connecting said cleanout pipes all substantially as and for the purpose set forth.

4. The herein-described double filter, constructed of two single sectional filters, the u pper section of each being free of strainerplates above the filtering material, a valved main and branch connection pipes, a tubular ring-shaped strainer secured thereto in each of the upper sections, and flattened bellshaped strainers in the other sections,a valved main clean-out pipe, branches leading thereto from all sections except the top and strainers secured to the branches, valved outlet-pipes leading from the bottom sections, pipes connected thereto, mud-catchers, valved supplypipes, connections between said supply-pipes and catchers, a coupling secured to the main pipe and Valved pipes connecting the mudcatchers with the coupling, all substantially as and for the purposes set forth.

5. The combination with a double filter, constructed of two single sectional filters; of a valved main connection-pipe between the same, valved by-pass pipes secured thereto, Valved branch pipes, extending into the upper portions of the sections of the filters, valved main clean-out pipes, with Valved branches, two of which connect with the top, and the others with the upper portion of the remaining sections of the filters, Valved outlets, valved supply-pipes, valved supply connection-pipes, mud-catchers and connections therefor, all of the valves being adapted to be so operated as to compel the water entering the lters to flow in any desired manner therethrough, substan tiallyas and for the purposes set forth.

In testimony whereof I affix my signature in presence of t-wo witnesses.

LOUIS WANNER, JR.

Titnesses GEO. H. RAPsoN, W. WALTER HENDERSON.

IOO

IIO 

